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nfqws: --debug to file and syslog

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This commit is contained in:
bol-van
2024-08-23 14:42:21 +03:00
parent 7252046362
commit ea9435a737
9 changed files with 479 additions and 285 deletions
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292
nfq/nfqws.c
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@@ -28,6 +28,7 @@
#include <sys/socket.h>
#include <sys/stat.h>
#include <netinet/in.h>
#include <syslog.h>
#ifdef __CYGWIN__
#include "win.h"
@@ -99,7 +100,7 @@ static uint8_t processPacketData(uint32_t *mark, const char *ifout, uint8_t *dat
#ifdef __linux__
if (*mark & params.desync_fwmark)
{
DLOG("ignoring generated packet\n")
DLOG("ignoring generated packet\n");
return VERDICT_PASS;
}
#endif
@@ -129,11 +130,11 @@ static int nfq_cb(struct nfq_q_handle *qh, struct nfgenmsg *nfmsg, struct nfq_da
ifidx = nfq_get_outdev(nfa);
if (ifidx) if_indextoname(ifidx,ifout);
DLOG("packet: id=%d len=%d mark=%08X ifout=%s(%u)\n", id, ilen, mark, ifout, ifidx)
DLOG("packet: id=%d len=%d mark=%08X ifout=%s(%u)\n", id, ilen, mark, ifout, ifidx);
}
else
// save some syscalls
DLOG("packet: id=%d len=%d mark=%08X\n", id, ilen, mark)
DLOG("packet: id=%d len=%d mark=%08X\n", id, ilen, mark);
if (ilen >= 0)
{
len = ilen;
@@ -158,49 +159,49 @@ static int nfq_main(void)
int fd,rv;
uint8_t buf[16384] __attribute__((aligned));
printf("opening library handle\n");
DLOG_CONDUP("opening library handle\n");
h = nfq_open();
if (!h) {
perror("nfq_open()");
DLOG_PERROR("nfq_open()");
goto exiterr;
}
printf("unbinding existing nf_queue handler for AF_INET (if any)\n");
DLOG_CONDUP("unbinding existing nf_queue handler for AF_INET (if any)\n");
if (nfq_unbind_pf(h, AF_INET) < 0) {
perror("nfq_unbind_pf()");
DLOG_PERROR("nfq_unbind_pf()");
goto exiterr;
}
printf("binding nfnetlink_queue as nf_queue handler for AF_INET\n");
DLOG_CONDUP("binding nfnetlink_queue as nf_queue handler for AF_INET\n");
if (nfq_bind_pf(h, AF_INET) < 0) {
perror("nfq_bind_pf()");
DLOG_PERROR("nfq_bind_pf()");
goto exiterr;
}
printf("binding this socket to queue '%u'\n", params.qnum);
DLOG_CONDUP("binding this socket to queue '%u'\n", params.qnum);
qh = nfq_create_queue(h, params.qnum, &nfq_cb, &params);
if (!qh) {
perror("nfq_create_queue()");
DLOG_PERROR("nfq_create_queue()");
goto exiterr;
}
printf("setting copy_packet mode\n");
DLOG_CONDUP("setting copy_packet mode\n");
if (nfq_set_mode(qh, NFQNL_COPY_PACKET, 0xffff) < 0) {
perror("can't set packet_copy mode");
DLOG_PERROR("can't set packet_copy mode");
goto exiterr;
}
if (nfq_set_queue_maxlen(qh, Q_MAXLEN) < 0) {
perror("can't set queue maxlen");
DLOG_PERROR("can't set queue maxlen");
goto exiterr;
}
// accept packets if they cant be handled
if (nfq_set_queue_flags(qh, NFQA_CFG_F_FAIL_OPEN , NFQA_CFG_F_FAIL_OPEN))
{
fprintf(stderr, "can't set queue flags. its OK on linux <3.6\n");
DLOG_ERR("can't set queue flags. its OK on linux <3.6\n");
// dot not fail. not supported on old linuxes <3.6
}
printf("initializing raw sockets bind-fix4=%u bind-fix6=%u\n",params.bind_fix4,params.bind_fix6);
DLOG_CONDUP("initializing raw sockets bind-fix4=%u bind-fix6=%u\n",params.bind_fix4,params.bind_fix6);
if (!rawsend_preinit(params.bind_fix4,params.bind_fix6))
goto exiterr;
@@ -227,24 +228,24 @@ static int nfq_main(void)
{
dohup();
int r = nfq_handle_packet(h, (char *)buf, rv);
if (r) fprintf(stderr, "nfq_handle_packet error %d\n", r);
if (r) DLOG_ERR("nfq_handle_packet error %d\n", r);
}
fprintf(stderr, "recv: errno %d\n",errno);
perror("recv");
DLOG_ERR("recv: errno %d\n",errno);
DLOG_PERROR("recv");
// do not fail on ENOBUFS
} while(errno==ENOBUFS);
printf("unbinding from queue %u\n", params.qnum);
DLOG_CONDUP("unbinding from queue %u\n", params.qnum);
nfq_destroy_queue(qh);
#ifdef INSANE
/* normally, applications SHOULD NOT issue this command, since
* it detaches other programs/sockets from AF_INET, too ! */
printf("unbinding from AF_INET\n");
DLOG_CONDUP("unbinding from AF_INET\n");
nfq_unbind_pf(h, AF_INET);
#endif
printf("closing library handle\n");
DLOG_CONDUP("closing library handle\n");
nfq_close(h);
return 0;
@@ -273,16 +274,16 @@ static int dvt_main(void)
bp4.sin_port = htons(params.port);
bp4.sin_addr.s_addr = INADDR_ANY;
printf("creating divert4 socket\n");
DLOG_CONDUP("creating divert4 socket\n");
fd[0] = socket_divert(AF_INET);
if (fd[0] == -1) {
perror("socket (DIVERT4)");
DLOG_PERROR("socket (DIVERT4)");
goto exiterr;
}
printf("binding divert4 socket\n");
DLOG_CONDUP("binding divert4 socket\n");
if (bind(fd[0], (struct sockaddr*)&bp4, sizeof(bp4)) < 0)
{
perror("bind (DIVERT4)");
DLOG_PERROR("bind (DIVERT4)");
goto exiterr;
}
if (!set_socket_buffers(fd[0],Q_RCVBUF,Q_SNDBUF))
@@ -298,16 +299,16 @@ static int dvt_main(void)
bp6.sin6_family = AF_INET6;
bp6.sin6_port = htons(params.port);
printf("creating divert6 socket\n");
DLOG_CONDUP("creating divert6 socket\n");
fd[1] = socket_divert(AF_INET6);
if (fd[1] == -1) {
perror("socket (DIVERT6)");
DLOG_PERROR("socket (DIVERT6)");
goto exiterr;
}
printf("binding divert6 socket\n");
DLOG_CONDUP("binding divert6 socket\n");
if (bind(fd[1], (struct sockaddr*)&bp6, sizeof(bp6)) < 0)
{
perror("bind (DIVERT6)");
DLOG_PERROR("bind (DIVERT6)");
goto exiterr;
}
fdct++;
@@ -317,7 +318,7 @@ static int dvt_main(void)
#endif
fdmax = (fd[0]>fd[1] ? fd[0] : fd[1]) + 1;
printf("initializing raw sockets\n");
DLOG_CONDUP("initializing raw sockets\n");
if (!rawsend_preinit(false,false))
goto exiterr;
@@ -340,7 +341,7 @@ static int dvt_main(void)
dohup();
continue;
}
perror("select");
DLOG_PERROR("select");
goto exiterr;
}
for(i=0;i<fdct;i++)
@@ -351,7 +352,7 @@ static int dvt_main(void)
rd = recvfrom(fd[i], buf, sizeof(buf), 0, (struct sockaddr*)&sa_from, &socklen);
if (rd<0)
{
perror("recvfrom");
DLOG_PERROR("recvfrom");
goto exiterr;
}
else if (rd>0)
@@ -360,21 +361,21 @@ static int dvt_main(void)
uint8_t verdict;
size_t len = rd;
DLOG("packet: id=%u len=%zu\n", id, len)
DLOG("packet: id=%u len=%zu\n", id, len);
verdict = processPacketData(&mark, NULL, buf, &len);
switch (verdict & VERDICT_MASK)
{
case VERDICT_PASS:
case VERDICT_MODIFY:
if ((verdict & VERDICT_MASK)==VERDICT_PASS)
DLOG("packet: id=%u reinject unmodified\n", id)
DLOG("packet: id=%u reinject unmodified\n", id);
else
DLOG("packet: id=%u reinject modified len=%zu\n", id, len)
DLOG("packet: id=%u reinject modified len=%zu\n", id, len);
wr = sendto(fd[i], buf, len, 0, (struct sockaddr*)&sa_from, socklen);
if (wr<0)
perror("reinject sendto");
DLOG_PERROR("reinject sendto");
else if (wr!=len)
fprintf(stderr,"reinject sendto: not all data was reinjected. received %zu, sent %zd\n", len, wr);
DLOG_ERR("reinject sendto: not all data was reinjected. received %zu, sent %zd\n", len, wr);
break;
default:
DLOG("packet: id=%u drop\n", id);
@@ -383,7 +384,7 @@ static int dvt_main(void)
}
else
{
DLOG("unexpected zero size recvfrom\n")
DLOG("unexpected zero size recvfrom\n");
}
}
}
@@ -414,7 +415,7 @@ static int win_main(const char *windivert_filter)
if (!win_dark_init(&params.ssid_filter, &params.nlm_filter))
{
fprintf(stderr, "win_dark_init failed. win32 error %u (0x%08X)\n", w_win32_error, w_win32_error);
DLOG_ERR("win_dark_init failed. win32 error %u (0x%08X)\n", w_win32_error, w_win32_error);
return w_win32_error;
}
@@ -422,20 +423,20 @@ static int win_main(const char *windivert_filter)
{
if (!logical_net_filter_match())
{
printf("logical network is not present. waiting it to appear.\n");
DLOG_CONDUP("logical network is not present. waiting it to appear.\n");
fflush(stdout);
do
{
if (bQuit)
{
DLOG("QUIT requested\n")
DLOG("QUIT requested\n");
win_dark_deinit();
return 0;
}
usleep(500000);
}
while (!logical_net_filter_match());
printf("logical network now present\n");
DLOG_CONDUP("logical network now present\n");
fflush(stdout);
}
@@ -445,7 +446,7 @@ static int win_main(const char *windivert_filter)
return w_win32_error;
}
printf("windivert initialized. capture is started.\n");
DLOG_CONDUP("windivert initialized. capture is started.\n");
// cygwin auto flush fails when piping
fflush(stdout);
@@ -458,36 +459,36 @@ static int win_main(const char *windivert_filter)
{
if (errno==ENOBUFS)
{
DLOG("windivert: ignoring too large packet\n")
DLOG("windivert: ignoring too large packet\n");
continue; // too large packet
}
else if (errno==ENODEV)
{
printf("logical network disappeared. deinitializing windivert.\n");
DLOG_CONDUP("logical network disappeared. deinitializing windivert.\n");
rawsend_cleanup();
break;
}
else if (errno==EINTR)
{
DLOG("QUIT requested\n")
DLOG("QUIT requested\n");
win_dark_deinit();
return 0;
}
fprintf(stderr, "windivert: recv failed. errno %d\n", errno);
DLOG_ERR("windivert: recv failed. errno %d\n", errno);
win_dark_deinit();
return w_win32_error;
}
*ifout=0;
if (wa.Outbound) snprintf(ifout,sizeof(ifout),"%u.%u", wa.Network.IfIdx, wa.Network.SubIfIdx);
DLOG("packet: id=%u len=%zu %s IPv6=%u IPChecksum=%u TCPChecksum=%u UDPChecksum=%u IfIdx=%u.%u\n", id, len, wa.Outbound ? "outbound" : "inbound", wa.IPv6, wa.IPChecksum, wa.TCPChecksum, wa.UDPChecksum, wa.Network.IfIdx, wa.Network.SubIfIdx)
DLOG("packet: id=%u len=%zu %s IPv6=%u IPChecksum=%u TCPChecksum=%u UDPChecksum=%u IfIdx=%u.%u\n", id, len, wa.Outbound ? "outbound" : "inbound", wa.IPv6, wa.IPChecksum, wa.TCPChecksum, wa.UDPChecksum, wa.Network.IfIdx, wa.Network.SubIfIdx);
if (wa.Impostor)
{
DLOG("windivert: passing impostor packet\n")
DLOG("windivert: passing impostor packet\n");
verdict = VERDICT_PASS;
}
else if (wa.Loopback)
{
DLOG("windivert: passing loopback packet\n")
DLOG("windivert: passing loopback packet\n");
verdict = VERDICT_PASS;
}
else
@@ -501,11 +502,11 @@ static int win_main(const char *windivert_filter)
case VERDICT_PASS:
case VERDICT_MODIFY:
if ((verdict & VERDICT_MASK)==VERDICT_PASS)
DLOG("packet: id=%u reinject unmodified\n", id)
DLOG("packet: id=%u reinject unmodified\n", id);
else
DLOG("packet: id=%u reinject modified len=%zu\n", id, len)
DLOG("packet: id=%u reinject modified len=%zu\n", id, len);
if (!windivert_send(packet, len, &wa))
fprintf(stderr,"windivert: reinject of packet id=%u failed\n", id);
DLOG_ERR("windivert: reinject of packet id=%u failed\n", id);
break;
default:
DLOG("packet: id=%u drop\n", id);
@@ -533,7 +534,7 @@ static bool parse_ws_scale_factor(char *s, uint16_t *wsize, uint8_t *wscale)
v = atoi(s);
if (v < 0 || v>65535)
{
fprintf(stderr, "bad wsize\n");
DLOG_ERR("bad wsize\n");
return false;
}
*wsize=(uint16_t)v;
@@ -542,7 +543,7 @@ static bool parse_ws_scale_factor(char *s, uint16_t *wsize, uint8_t *wscale)
v = atoi(p);
if (v < 0 || v>255)
{
fprintf(stderr, "bad wscale\n");
DLOG_ERR("bad wscale\n");
return false;
}
*wscale = (uint8_t)v;
@@ -595,19 +596,19 @@ static void load_file_or_exit(const char *filename, void *buf, size_t *size)
{
if (!parse_hex_str(filename+2,buf,size) || !*size)
{
fprintf(stderr, "invalid hex string: %s\n",filename+2);
DLOG_ERR("invalid hex string: %s\n",filename+2);
exit_clean(1);
}
DLOG("read %zu bytes from hex string\n",*size)
DLOG("read %zu bytes from hex string\n",*size);
}
else
{
if (!load_file_nonempty(filename,buf,size))
{
fprintf(stderr, "could not read %s\n",filename);
DLOG_ERR("could not read %s\n",filename);
exit_clean(1);
}
DLOG("read %zu bytes from %s\n",*size,filename)
DLOG("read %zu bytes from %s\n",*size,filename);
}
}
@@ -786,7 +787,7 @@ static unsigned int hash_jen(const void *data,unsigned int len)
static void exithelp(void)
{
printf(
" --debug=0|1\n"
" --debug=0|1|syslog|@<filename>\n"
#ifdef __linux__
" --qnum=<nfqueue_number>\n"
#elif defined(BSD)
@@ -1078,7 +1079,41 @@ int main(int argc, char **argv)
switch (option_index)
{
case 0: /* debug */
params.debug = !optarg || atoi(optarg);
if (optarg)
{
if (*optarg=='@')
{
strncpy(params.debug_logfile,optarg+1,sizeof(params.debug_logfile));
params.debug_logfile[sizeof(params.debug_logfile)-1] = 0;
FILE *F = fopen(params.debug_logfile,"wt");
if (!F)
{
fprintf(stderr, "cannot create %s\n", params.debug_logfile);
exit_clean(1);
}
#ifndef __CYGWIN__
if (params.droproot && chown(params.debug_logfile, params.uid, -1))
fprintf(stderr, "could not chown %s. log file may not be writable after privilege drop\n", params.debug_logfile);
#endif
params.debug = true;
params.debug_target = LOG_TARGET_FILE;
}
else if (!strcmp(optarg,"syslog"))
{
params.debug = true;
params.debug_target = LOG_TARGET_SYSLOG;
}
else
{
params.debug = !!atoi(optarg);
params.debug_target = LOG_TARGET_CONSOLE;
}
}
else
{
params.debug = true;
params.debug_target = LOG_TARGET_CONSOLE;
}
break;
#ifndef __CYGWIN__
case 1: /* qnum or port */
@@ -1086,7 +1121,7 @@ int main(int argc, char **argv)
params.qnum = atoi(optarg);
if (params.qnum < 0 || params.qnum>65535)
{
fprintf(stderr, "bad qnum\n");
DLOG_ERR("bad qnum\n");
exit_clean(1);
}
#elif defined(BSD)
@@ -1094,7 +1129,7 @@ int main(int argc, char **argv)
int i = atoi(optarg);
if (i <= 0 || i > 65535)
{
fprintf(stderr, "bad port number\n");
DLOG_ERR("bad port number\n");
exit_clean(1);
}
params.port = (uint16_t)i;
@@ -1115,7 +1150,7 @@ int main(int argc, char **argv)
struct passwd *pwd = getpwnam(optarg);
if (!pwd)
{
fprintf(stderr, "non-existent username supplied\n");
DLOG_ERR("non-existent username supplied\n");
exit_clean(1);
}
params.uid = pwd->pw_uid;
@@ -1128,7 +1163,7 @@ int main(int argc, char **argv)
params.droproot = true;
if (sscanf(optarg, "%u:%u", &params.uid, &params.gid)<1)
{
fprintf(stderr, "--uid should be : uid[:gid]\n");
DLOG_ERR("--uid should be : uid[:gid]\n");
exit_clean(1);
}
break;
@@ -1144,14 +1179,14 @@ int main(int argc, char **argv)
case 8: /* wssize-cutoff */
if (!parse_cutoff(optarg, &params.wssize_cutoff, &params.wssize_cutoff_mode))
{
fprintf(stderr, "invalid wssize-cutoff value\n");
DLOG_ERR("invalid wssize-cutoff value\n");
exit_clean(1);
}
break;
case 9: /* ctrack-timeouts */
if (sscanf(optarg, "%u:%u:%u:%u", &params.ctrack_t_syn, &params.ctrack_t_est, &params.ctrack_t_fin, &params.ctrack_t_udp)<3)
{
fprintf(stderr, "invalid ctrack-timeouts value\n");
DLOG_ERR("invalid ctrack-timeouts value\n");
exit_clean(1);
}
break;
@@ -1161,7 +1196,7 @@ int main(int argc, char **argv)
case 11: /* hostspell */
if (strlen(optarg) != 4)
{
fprintf(stderr, "hostspell must be exactly 4 chars long\n");
DLOG_ERR("hostspell must be exactly 4 chars long\n");
exit_clean(1);
}
params.hostcase = true;
@@ -1196,23 +1231,23 @@ int main(int argc, char **argv)
params.desync_mode2 = desync_mode_from_string(mode2);
if (params.desync_mode0==DESYNC_INVALID || params.desync_mode==DESYNC_INVALID || params.desync_mode2==DESYNC_INVALID)
{
fprintf(stderr, "invalid dpi-desync mode\n");
DLOG_ERR("invalid dpi-desync mode\n");
exit_clean(1);
}
if (mode3)
{
fprintf(stderr, "invalid desync combo : %s+%s+%s\n",mode,mode2,mode3);
DLOG_ERR("invalid desync combo : %s+%s+%s\n",mode,mode2,mode3);
exit_clean(1);
}
if (params.desync_mode2 && (desync_only_first_stage(params.desync_mode) || !(desync_valid_first_stage(params.desync_mode) && desync_valid_second_stage(params.desync_mode2))))
{
fprintf(stderr, "invalid desync combo : %s+%s\n", mode,mode2);
DLOG_ERR("invalid desync combo : %s+%s\n", mode,mode2);
exit_clean(1);
}
#if defined(__OpenBSD__)
if (params.desync_mode==DESYNC_IPFRAG2 || params.desync_mode2==DESYNC_IPFRAG2)
{
fprintf(stderr, "OpenBSD has checksum issues with fragmented packets. ipfrag disabled.\n");
DLOG_ERR("OpenBSD has checksum issues with fragmented packets. ipfrag disabled.\n");
exit_clean(1);
}
#endif
@@ -1225,11 +1260,11 @@ int main(int argc, char **argv)
if (sscanf(optarg, "0x%X", &params.desync_fwmark)<=0) sscanf(optarg, "%u", &params.desync_fwmark);
if (!params.desync_fwmark)
{
fprintf(stderr, "fwmark/sockarg should be decimal or 0xHEX and should not be zero\n");
DLOG_ERR("fwmark/sockarg should be decimal or 0xHEX and should not be zero\n");
exit_clean(1);
}
#else
fprintf(stderr, "fmwark/sockarg not supported in this OS\n");
DLOG_ERR("fmwark/sockarg not supported in this OS\n");
exit_clean(1);
#endif
break;
@@ -1243,14 +1278,14 @@ int main(int argc, char **argv)
case 18: /* dpi-desync-autottl */
if (!parse_autottl(optarg, &params.desync_autottl))
{
fprintf(stderr, "dpi-desync-autottl value error\n");
DLOG_ERR("dpi-desync-autottl value error\n");
exit_clean(1);
}
break;
case 19: /* dpi-desync-autottl6 */
if (!parse_autottl(optarg, &params.desync_autottl6))
{
fprintf(stderr, "dpi-desync-autottl6 value error\n");
DLOG_ERR("dpi-desync-autottl6 value error\n");
exit_clean(1);
}
break;
@@ -1268,7 +1303,7 @@ int main(int argc, char **argv)
else if (!strcmp(p,"badsum"))
{
#ifdef __OpenBSD__
printf("\nWARNING !!! OpenBSD may forcibly recompute tcp/udp checksums !!! In this case badsum fooling will not work.\nYou should check tcp checksum correctness in tcpdump manually before using badsum.\n\n");
DLOG_CONDUP("\nWARNING !!! OpenBSD may forcibly recompute tcp/udp checksums !!! In this case badsum fooling will not work.\nYou should check tcp checksum correctness in tcpdump manually before using badsum.\n\n");
#endif
params.desync_fooling_mode |= FOOL_BADSUM;
}
@@ -1282,7 +1317,7 @@ int main(int argc, char **argv)
params.desync_fooling_mode |= FOOL_HOPBYHOP2;
else if (strcmp(p,"none"))
{
fprintf(stderr, "dpi-desync-fooling allowed values : none,md5sig,ts,badseq,badsum,datanoack,hopbyhop,hopbyhop2\n");
DLOG_ERR("dpi-desync-fooling allowed values : none,md5sig,ts,badseq,badsum,datanoack,hopbyhop,hopbyhop2\n");
exit_clean(1);
}
p = e;
@@ -1292,7 +1327,7 @@ int main(int argc, char **argv)
case 21: /* dpi-desync-repeats */
if (sscanf(optarg,"%u",&params.desync_repeats)<1 || !params.desync_repeats || params.desync_repeats>20)
{
fprintf(stderr, "dpi-desync-repeats must be within 1..20\n");
DLOG_ERR("dpi-desync-repeats must be within 1..20\n");
exit_clean(1);
}
break;
@@ -1302,28 +1337,28 @@ int main(int argc, char **argv)
case 23: /* dpi-desync-split-pos */
if (sscanf(optarg,"%u",&params.desync_split_pos)<1 || params.desync_split_pos<1)
{
fprintf(stderr, "dpi-desync-split-pos is not valid\n");
DLOG_ERR("dpi-desync-split-pos is not valid\n");
exit_clean(1);
}
break;
case 24: /* dpi-desync-split-http-req */
if (!parse_httpreqpos(optarg, &params.desync_split_http_req))
{
fprintf(stderr, "Invalid argument for dpi-desync-split-http-req\n");
DLOG_ERR("Invalid argument for dpi-desync-split-http-req\n");
exit_clean(1);
}
break;
case 25: /* dpi-desync-split-tls */
if (!parse_tlspos(optarg, &params.desync_split_tls))
{
fprintf(stderr, "Invalid argument for dpi-desync-split-tls\n");
DLOG_ERR("Invalid argument for dpi-desync-split-tls\n");
exit_clean(1);
}
break;
case 26: /* dpi-desync-split-seqovl */
if (sscanf(optarg,"%u",&params.desync_seqovl)<1)
{
fprintf(stderr, "dpi-desync-split-seqovl is not valid\n");
DLOG_ERR("dpi-desync-split-seqovl is not valid\n");
exit_clean(1);
}
break;
@@ -1338,38 +1373,38 @@ int main(int argc, char **argv)
case 28: /* dpi-desync-ipfrag-pos-tcp */
if (sscanf(optarg,"%u",&params.desync_ipfrag_pos_tcp)<1 || params.desync_ipfrag_pos_tcp<1 || params.desync_ipfrag_pos_tcp>DPI_DESYNC_MAX_FAKE_LEN)
{
fprintf(stderr, "dpi-desync-ipfrag-pos-tcp must be within 1..%u range\n",DPI_DESYNC_MAX_FAKE_LEN);
DLOG_ERR("dpi-desync-ipfrag-pos-tcp must be within 1..%u range\n",DPI_DESYNC_MAX_FAKE_LEN);
exit_clean(1);
}
if (params.desync_ipfrag_pos_tcp & 7)
{
fprintf(stderr, "dpi-desync-ipfrag-pos-tcp must be multiple of 8\n");
DLOG_ERR("dpi-desync-ipfrag-pos-tcp must be multiple of 8\n");
exit_clean(1);
}
break;
case 29: /* dpi-desync-ipfrag-pos-udp */
if (sscanf(optarg,"%u",&params.desync_ipfrag_pos_udp)<1 || params.desync_ipfrag_pos_udp<1 || params.desync_ipfrag_pos_udp>DPI_DESYNC_MAX_FAKE_LEN)
{
fprintf(stderr, "dpi-desync-ipfrag-pos-udp must be within 1..%u range\n",DPI_DESYNC_MAX_FAKE_LEN);
DLOG_ERR("dpi-desync-ipfrag-pos-udp must be within 1..%u range\n",DPI_DESYNC_MAX_FAKE_LEN);
exit_clean(1);
}
if (params.desync_ipfrag_pos_udp & 7)
{
fprintf(stderr, "dpi-desync-ipfrag-pos-udp must be multiple of 8\n");
DLOG_ERR("dpi-desync-ipfrag-pos-udp must be multiple of 8\n");
exit_clean(1);
}
break;
case 30: /* dpi-desync-badseq-increments */
if (!parse_badseq_increment(optarg,&params.desync_badseq_increment))
{
fprintf(stderr, "dpi-desync-badseq-increment should be signed decimal or signed 0xHEX\n");
DLOG_ERR("dpi-desync-badseq-increment should be signed decimal or signed 0xHEX\n");
exit_clean(1);
}
break;
case 31: /* dpi-desync-badack-increment */
if (!parse_badseq_increment(optarg,&params.desync_badseq_ack_increment))
{
fprintf(stderr, "dpi-desync-badack-increment should be signed decimal or signed 0xHEX\n");
DLOG_ERR("dpi-desync-badack-increment should be signed decimal or signed 0xHEX\n");
exit_clean(1);
}
break;
@@ -1411,7 +1446,7 @@ int main(int argc, char **argv)
case 41: /* dpi-desync-udplen-increment */
if (sscanf(optarg,"%d",&params.udplen_increment)<1 || params.udplen_increment>0x7FFF || params.udplen_increment<-0x8000)
{
fprintf(stderr, "dpi-desync-udplen-increment must be integer within -32768..32767 range\n");
DLOG_ERR("dpi-desync-udplen-increment must be integer within -32768..32767 range\n");
exit_clean(1);
}
break;
@@ -1426,59 +1461,59 @@ int main(int argc, char **argv)
case 43: /* desync-cutoff */
if (!parse_cutoff(optarg, &params.desync_cutoff, &params.desync_cutoff_mode))
{
fprintf(stderr, "invalid desync-cutoff value\n");
DLOG_ERR("invalid desync-cutoff value\n");
exit_clean(1);
}
break;
case 44: /* desync-start */
if (!parse_cutoff(optarg, &params.desync_start, &params.desync_start_mode))
{
fprintf(stderr, "invalid desync-start value\n");
DLOG_ERR("invalid desync-start value\n");
exit_clean(1);
}
break;
case 45: /* hostlist */
if (!strlist_add(&params.hostlist_files, optarg))
{
fprintf(stderr, "strlist_add failed\n");
DLOG_ERR("strlist_add failed\n");
exit_clean(1);
}
break;
case 46: /* hostlist-exclude */
if (!strlist_add(&params.hostlist_exclude_files, optarg))
{
fprintf(stderr, "strlist_add failed\n");
DLOG_ERR("strlist_add failed\n");
exit_clean(1);
}
break;
case 47: /* hostlist-auto */
if (*params.hostlist_auto_filename)
{
fprintf(stderr, "only one auto hostlist is supported\n");
DLOG_ERR("only one auto hostlist is supported\n");
exit_clean(1);
}
{
FILE *F = fopen(optarg,"a+t");
FILE *F = fopen(optarg,"at");
if (!F)
{
fprintf(stderr, "cannot create %s\n", optarg);
DLOG_ERR("cannot create %s\n", optarg);
exit_clean(1);
}
bool bGzip = is_gzip(F);
fclose(F);
if (bGzip)
{
fprintf(stderr, "gzipped auto hostlists are not supported\n");
DLOG_ERR("gzipped auto hostlists are not supported\n");
exit_clean(1);
}
#ifndef __CYGWIN__
if (params.droproot && chown(optarg, params.uid, -1))
fprintf(stderr, "could not chown %s. auto hostlist file may not be writable after privilege drop\n", optarg);
DLOG_ERR("could not chown %s. auto hostlist file may not be writable after privilege drop\n", optarg);
#endif
}
if (!strlist_add(&params.hostlist_files, optarg))
{
fprintf(stderr, "strlist_add failed\n");
DLOG_ERR("strlist_add failed\n");
exit_clean(1);
}
strncpy(params.hostlist_auto_filename, optarg, sizeof(params.hostlist_auto_filename));
@@ -1488,7 +1523,7 @@ int main(int argc, char **argv)
params.hostlist_auto_fail_threshold = (uint8_t)atoi(optarg);
if (params.hostlist_auto_fail_threshold<1 || params.hostlist_auto_fail_threshold>20)
{
fprintf(stderr, "auto hostlist fail threshold must be within 1..20\n");
DLOG_ERR("auto hostlist fail threshold must be within 1..20\n");
exit_clean(1);
}
break;
@@ -1496,7 +1531,7 @@ int main(int argc, char **argv)
params.hostlist_auto_fail_time = (uint8_t)atoi(optarg);
if (params.hostlist_auto_fail_time<1)
{
fprintf(stderr, "auto hostlist fail time is not valid\n");
DLOG_ERR("auto hostlist fail time is not valid\n");
exit_clean(1);
}
break;
@@ -1504,7 +1539,7 @@ int main(int argc, char **argv)
params.hostlist_auto_retrans_threshold = (uint8_t)atoi(optarg);
if (params.hostlist_auto_retrans_threshold<2 || params.hostlist_auto_retrans_threshold>10)
{
fprintf(stderr, "auto hostlist fail threshold must be within 2..10\n");
DLOG_ERR("auto hostlist fail threshold must be within 2..10\n");
exit_clean(1);
}
break;
@@ -1513,13 +1548,13 @@ int main(int argc, char **argv)
FILE *F = fopen(optarg,"a+t");
if (!F)
{
fprintf(stderr, "cannot create %s\n", optarg);
DLOG_ERR("cannot create %s\n", optarg);
exit_clean(1);
}
fclose(F);
#ifndef __CYGWIN__
if (params.droproot && chown(optarg, params.uid, -1))
fprintf(stderr, "could not chown %s. auto hostlist debug log may not be writable after privilege drop\n", optarg);
DLOG_ERR("could not chown %s. auto hostlist debug log may not be writable after privilege drop\n", optarg);
#endif
strncpy(params.hostlist_auto_debuglog, optarg, sizeof(params.hostlist_auto_debuglog));
params.hostlist_auto_debuglog[sizeof(params.hostlist_auto_debuglog) - 1] = '\0';
@@ -1536,14 +1571,14 @@ int main(int argc, char **argv)
case 52: /* wf-iface */
if (!sscanf(optarg,"%u.%u",&IfIdx,&SubIfIdx))
{
fprintf(stderr, "bad value for --wf-iface\n");
DLOG_ERR("bad value for --wf-iface\n");
exit_clean(1);
}
break;
case 53: /* wf-l3 */
if (!wf_make_l3(optarg,&wf_ipv4,&wf_ipv6))
{
fprintf(stderr, "bad value for --wf-l3\n");
DLOG_ERR("bad value for --wf-l3\n");
exit_clean(1);
}
break;
@@ -1552,7 +1587,7 @@ int main(int argc, char **argv)
if (!wf_make_pf(optarg,"tcp","SrcPort",wf_pf_tcp_src,sizeof(wf_pf_tcp_src)) ||
!wf_make_pf(optarg,"tcp","DstPort",wf_pf_tcp_dst,sizeof(wf_pf_tcp_dst)))
{
fprintf(stderr, "bad value for --wf-tcp\n");
DLOG_ERR("bad value for --wf-tcp\n");
exit_clean(1);
}
break;
@@ -1561,7 +1596,7 @@ int main(int argc, char **argv)
if (!wf_make_pf(optarg,"udp","SrcPort",wf_pf_udp_src,sizeof(wf_pf_udp_src)) ||
!wf_make_pf(optarg,"udp","DstPort",wf_pf_udp_dst,sizeof(wf_pf_udp_dst)))
{
fprintf(stderr, "bad value for --wf-udp\n");
DLOG_ERR("bad value for --wf-udp\n");
exit_clean(1);
}
break;
@@ -1593,7 +1628,7 @@ int main(int argc, char **argv)
if (e) *e++=0;
if (*p && !strlist_add(&params.ssid_filter, p))
{
fprintf(stderr, "strlist_add failed\n");
DLOG_ERR("strlist_add failed\n");
exit_clean(1);
}
p = e;
@@ -1611,7 +1646,7 @@ int main(int argc, char **argv)
if (e) *e++=0;
if (*p && !strlist_add(&params.nlm_filter, p))
{
fprintf(stderr, "strlist_add failed\n");
DLOG_ERR("strlist_add failed\n");
exit_clean(1);
}
p = e;
@@ -1622,7 +1657,7 @@ int main(int argc, char **argv)
case 60: /* nlm-list */
if (!nlm_list(optarg && !strcmp(optarg,"all")))
{
fprintf(stderr, "could not get list of NLM networks\n");
DLOG_ERR("could not get list of NLM networks\n");
exit_clean(1);
}
exit_clean(0);
@@ -1631,16 +1666,19 @@ int main(int argc, char **argv)
}
}
if (params.debug && params.debug_target==LOG_TARGET_SYSLOG)
openlog(progname,LOG_PID,LOG_USER);
#ifdef __linux__
if (params.qnum<0)
{
fprintf(stderr, "Need queue number (--qnum)\n");
DLOG_ERR("Need queue number (--qnum)\n");
exit_clean(1);
}
#elif defined(BSD)
if (!params.port)
{
fprintf(stderr, "Need divert port (--port)\n");
DLOG_ERR("Need divert port (--port)\n");
exit_clean(1);
}
#elif defined(__CYGWIN__)
@@ -1648,26 +1686,26 @@ int main(int argc, char **argv)
{
if (!*wf_pf_tcp_src && !*wf_pf_udp_src)
{
fprintf(stderr, "windivert filter : must specify port filter\n");
DLOG_ERR("windivert filter : must specify port filter\n");
exit_clean(1);
}
if (!wf_make_filter(windivert_filter, sizeof(windivert_filter), IfIdx, SubIfIdx, wf_ipv4, wf_ipv6, wf_pf_tcp_src, wf_pf_tcp_dst, wf_pf_udp_src, wf_pf_udp_dst))
{
fprintf(stderr, "windivert filter : could not make filter\n");
DLOG_ERR("windivert filter : could not make filter\n");
exit_clean(1);
}
}
DLOG("windivert filter size: %zu\nwindivert filter:\n%s\n",strlen(windivert_filter),windivert_filter)
DLOG("windivert filter size: %zu\nwindivert filter:\n%s\n",strlen(windivert_filter),windivert_filter);
if (*wf_save_file)
{
if (save_file(wf_save_file,windivert_filter,strlen(windivert_filter)))
{
printf("windivert filter: raw filter saved to %s\n", wf_save_file);
DLOG_ERR("windivert filter: raw filter saved to %s\n", wf_save_file);
exit_clean(0);
}
else
{
fprintf(stderr, "windivert filter: could not save raw filter to %s\n", wf_save_file);
DLOG_ERR("windivert filter: could not save raw filter to %s\n", wf_save_file);
exit_clean(1);
}
}
@@ -1680,7 +1718,7 @@ int main(int argc, char **argv)
if (hMutexArg && GetLastError()==ERROR_ALREADY_EXISTS)
{
CloseHandle(hMutexArg); hMutexArg = NULL;
fprintf(stderr, "A copy of winws is already running with the same filter\n");
DLOG_ERR("A copy of winws is already running with the same filter\n");
goto exiterr;
}
@@ -1691,22 +1729,22 @@ int main(int argc, char **argv)
if (params.desync_ttl6 == 0xFF) params.desync_ttl6=params.desync_ttl;
if (!AUTOTTL_ENABLED(params.desync_autottl6)) params.desync_autottl6 = params.desync_autottl;
if (AUTOTTL_ENABLED(params.desync_autottl))
DLOG("autottl ipv4 %u:%u-%u\n",params.desync_autottl.delta,params.desync_autottl.min,params.desync_autottl.max)
DLOG("autottl ipv4 %u:%u-%u\n",params.desync_autottl.delta,params.desync_autottl.min,params.desync_autottl.max);
if (AUTOTTL_ENABLED(params.desync_autottl6))
DLOG("autottl ipv6 %u:%u-%u\n",params.desync_autottl6.delta,params.desync_autottl6.min,params.desync_autottl6.max)
DLOG("autottl ipv6 %u:%u-%u\n",params.desync_autottl6.delta,params.desync_autottl6.min,params.desync_autottl6.max);
if (params.desync_split_tls==tlspos_none && params.desync_split_pos) params.desync_split_tls=tlspos_pos;
if (params.desync_split_http_req==httpreqpos_none && params.desync_split_pos) params.desync_split_http_req=httpreqpos_pos;
if (!LoadIncludeHostLists())
{
fprintf(stderr, "Include hostlist load failed\n");
DLOG_ERR("Include hostlist load failed\n");
exit_clean(1);
}
if (*params.hostlist_auto_filename)
NonEmptyHostlist(&params.hostlist);
if (!LoadExcludeHostLists())
{
fprintf(stderr, "Exclude hostlist load failed\n");
DLOG_ERR("Exclude hostlist load failed\n");
exit_clean(1);
}
@@ -1714,11 +1752,11 @@ int main(int argc, char **argv)
if (*pidfile && !writepid(pidfile))
{
fprintf(stderr, "could not write pidfile\n");
DLOG_ERR("could not write pidfile\n");
goto exiterr;
}
DLOG("initializing conntrack with timeouts tcp=%u:%u:%u udp=%u\n", params.ctrack_t_syn, params.ctrack_t_est, params.ctrack_t_fin, params.ctrack_t_udp)
DLOG("initializing conntrack with timeouts tcp=%u:%u:%u udp=%u\n", params.ctrack_t_syn, params.ctrack_t_est, params.ctrack_t_fin, params.ctrack_t_udp);
ConntrackPoolInit(&params.conntrack, 10, params.ctrack_t_syn, params.ctrack_t_est, params.ctrack_t_fin, params.ctrack_t_udp);
#ifdef __linux__